package com.ztmg.common.util.QRcodeImage;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.ztmg.common.constant.CommonConstants;
import org.apache.commons.codec.binary.Base64;
import sun.awt.SunHints;

import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.*;
import java.awt.*;
import java.awt.font.GlyphVector;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class ZXingCode {

    private static final int QRCOLOR = 0xFF000000;   //默认是黑色
    private static final int BGWHITE = 0xFFFFFFFF;   //背景颜色


    public static void main(String[] args) throws WriterException
    {
        try
        {
            String filePath = CommonConstants.QRCODE_LOGO_URL;//TODO

            String params =Base64.encodeBase64String("019010101".getBytes());
            String content = CommonConstants.QRCODE_LINK_WEIXI_URK+params;
            String destFile =CommonConstants.QRCODE_GENERAL_ZIP_FILE_URL+"/"  +"东15-0101.png";

            try
            {
                ZXingCode zp = new ZXingCode();
//                BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 235, 235, zp.getDecodeHintType());
                //BufferedImage bim1 = zp.getQR_CODEBufferedImage("6923450657713", BarcodeFormat.EAN_13, 235, 235, zp.getDecodeHintType());

//                return zp.addLogo_QRCode(bim, new File(filePath), new LogoConfig(), productName);
//                ImageIO.write(bim, "jpg", new File(destFile));
                getLogoQRCodeTest("046010128","西16-0128");
            }
            catch (Exception e)
            {
                e.printStackTrace();
            }
//            getLogoQRCode(content, "东15-0110");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
    /**
     * 生成带logo的二维码图片
     *
     * @param code
     * @param productName
     */
    public static void getLogoQRCodeTest(String code,String productName)
    {
        try
        {
//            String filePath = CommonConstants.QRCODE_LOGO_URL;//TODO

            String params =Base64.encodeBase64String(code.getBytes());
            String content = CommonConstants.QRCODE_LINK_WEIXI_URK+params;
            String destFile =CommonConstants.QRCODE_GENERAL_ZIP_FILE_URL+"/"  +productName+".jpg";

            try
            {
                ZXingCode zp = new ZXingCode();
                BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 235, 235, zp.getDecodeHintType());
                //BufferedImage bim1 = zp.getQR_CODEBufferedImage("6923450657713", BarcodeFormat.EAN_13, 235, 235, zp.getDecodeHintType());

//                return zp.addLogo_QRCode(bim, new File(filePath), new LogoConfig(), productName);
                ImageIO.write(bim, "jpg", new File(destFile));
            }
            catch (Exception e)
            {
                e.printStackTrace();
            }
//            getLogoQRCode(content, "东15-0110");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
    /**
     * 生成带logo的二维码图片
     *
     * @param qrUrl
     * @param productName
     */
    public static String getLogoQRCode(String qrUrl,String productName)
    {
//      String filePath = (javax.servlet.http.HttpServletRequest)request.getSession().getServletContext().getRealPath("/") + "resources/images/logoImages/llhlogo.png";
        //filePath是二维码logo的路径，但是实际中我们是放在项目的某个路径下面的，所以路径用上面的，把下面的注释就好
        String filePath = CommonConstants.QRCODE_LOGO_URL;//TODO
        String content = qrUrl;
        try
        {
            ZXingCode zp = new ZXingCode();
            BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 235, 235, zp.getDecodeHintType());
            //BufferedImage bim1 = zp.getQR_CODEBufferedImage("6923450657713", BarcodeFormat.EAN_13, 235, 235, zp.getDecodeHintType());

            return zp.addLogo_QRCode(bim, new File(filePath), new LogoConfig(), productName);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 给二维码图片添加Logo
     *
     */
    public String addLogo_QRCode(BufferedImage bim, File logoPic, LogoConfig logoConfig, String productName)
    {
        try
        {
            System.setProperty("awt.useSystemAAFontSettings", "on");
            System.setProperty("swing.aatext", "true");
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            /**
             * 读取二维码图片，并构建绘图对象
             */

            BufferedImage image = bim;
            Graphics2D  g = image.createGraphics();

            /**
             * 读取Logo图片
             */
            BufferedImage logo = ImageIO.read(logoPic);
//            BufferedImage logo1 = ImageIO.read(new File("C:/Users/Administrator/Desktop/QRcode/logo/Desktop/logo1.png"));
//            BufferedImage logo2 = ImageIO.read(new File("C:/Users/Administrator/Desktop/QRcode/logo/Desktop/logo2.png"));
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null)>image.getWidth()*3/10?(image.getWidth()*3/10):logo.getWidth(null),
                    heightLogo = logo.getHeight(null)>image.getHeight()*3/10?(image.getHeight()*3/10):logo.getWidth(null);

            /**
             * logo放在中心
             */
            int x = (image.getWidth() - widthLogo) / 2;
            int y = (image.getHeight() - heightLogo) / 2;
            /**
             * logo放在右下角
             *  int x = (image.getWidth() - widthLogo);
             *  int y = (image.getHeight() - heightLogo);
             */
            //开始绘制图片
//            g.drawImage(
//                    logo.getScaledInstance(widthLogo,
//                            heightLogo, Image.SCALE_SMOOTH),x, y, null);
//            g.drawImage(logo, x, y, null);
//            g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
//            g.setStroke(new BasicStroke(logoConfig.getBorder()));
//            g.setColor(logoConfig.getBorderColor());
//            g.drawRect(x, y, widthLogo, heightLogo);
//            g.dispose();

            //把商品名称添加上去，商品名称不要太长哦，这里最多支持两行。太长就会自动截取啦
            if (productName != null && !productName.equals("")) {
                //新的图片，把带logo的二维码下面加上文字
                BufferedImage outImage = new BufferedImage(800, 400, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D outg = outImage.createGraphics();

                //画二维码到新的面板
//                g.drawImage(
//                        image.getScaledInstance( image.getWidth(),
//                                image.getHeight(), Image.SCALE_SMOOTH),
//                        widthLogo, widthLogo, null);
                outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);

                //画文字到新的面板
                outg.setColor(Color.BLACK);
                Font f = new Font("微软雅黑",Font.ITALIC,40);
                outg.setFont(f); //字体、字型、字号
                GlyphVector v = f.createGlyphVector(outg.getFontMetrics().getFontRenderContext(),productName);
                Shape shape = v.getOutline();
                //Paint with texturing brush
                int strWidth = outg.getFontMetrics().stringWidth(productName);
                if (strWidth > 399) {
//                  //长度过长就截取前面部分
//                  outg.drawString(productName, 0, image.getHeight() + (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字
                    //长度过长就换行
                    String productName1 = productName.substring(0, productName.length()/2);
                    String productName2 = productName.substring(productName.length()/2, productName.length());
                    int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
                    int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
                    outg.drawString(productName1, image.getWidth() +  12 ,200  - strWidth1/2 );
                    BufferedImage outImage2 = new BufferedImage(800, 400, BufferedImage.TYPE_4BYTE_ABGR);
                    Graphics2D outg2 = outImage2.createGraphics();
                    outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                    outg2.setColor(Color.BLACK);
                    outg2.setFont(new Font("微软雅黑",Font.BOLD,30)); //字体、字型、字号
                    outg2.drawString(productName2, outImage.getWidth() + 12 ,200  - strWidth2/2 );
                    outg2.dispose();
                    outImage2.flush();
                    outImage = outImage2;
                }else {
                    outg.translate(
                            image.getWidth() + 50,
                            200  - strWidth/2 +50
                    );
                    outg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                    outg.setColor(Color.WHITE);
                    outg.fill(shape);
                    outg.setColor(Color.BLUE.darker().darker());
                    float dash[] = {1,1};
                    outg.setStroke(new BasicStroke(3,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND,1,dash,2 ));
                    outg.fill(shape);
                    outg.draw(shape ); //画文字
//                    outg.drawString(shape, image.getWidth() + 12,200  - strWidth/2  ); //画文字
                }
                outg.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                outg.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
                outg.setRenderingHint(SunHints.KEY_ANTIALIASING, SunHints.VALUE_ANTIALIAS_OFF);
                outg.setRenderingHint(SunHints.KEY_TEXT_ANTIALIASING, SunHints.VALUE_TEXT_ANTIALIAS_DEFAULT);
                outg.setRenderingHint(SunHints.KEY_STROKE_CONTROL, SunHints.VALUE_STROKE_DEFAULT);
                outg.setRenderingHint(SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST, 140);
                outg.setRenderingHint(SunHints.KEY_FRACTIONALMETRICS, SunHints.VALUE_FRACTIONALMETRICS_OFF);
                outg.setRenderingHint(SunHints.KEY_RENDERING, SunHints.VALUE_RENDER_DEFAULT);
                outg.dispose();
                outImage.flush();
                image = outImage;
            }
            //把当前图片画到图片模板
            BufferedImage modelImage =ImageIO.read(new File(CommonConstants.QRCODE_LOGO_URL_2));
            Graphics2D model = modelImage.createGraphics();

            model.drawImage(image,132,100,modelImage.getWidth(),modelImage.getHeight(),null);
            logo.flush();
            image.flush();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            baos.flush();
            ImageIO.write(modelImage, "png", baos);

            //二维码生成的路径，但是实际项目中，我们是把这生成的二维码显示到界面上的，因此下面的折行代码可以注释掉
            //可以看到这个方法最终返回的是这个二维码的imageBase64字符串
            //前端用 <img src="data:image/png;base64,${imageBase64QRCode}"/>  其中${imageBase64QRCode}对应二维码的imageBase64字符串
            ImageIO.write(modelImage, "png", new File(CommonConstants.QRCODE_GENERAL_ZIP_FILE_URL+"/" +productName +".png")); //TODO

            String imageBase64QRCode =  Base64.encodeBase64URLSafeString(baos.toByteArray());

            baos.close();
            return imageBase64QRCode;
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return null;
    }


    /**
     * 构建初始化二维码
     *
     * @param bm
     * @return
     */
    public BufferedImage fileToBufferedImage(BitMatrix bm)
    {
        BufferedImage image = null;
        try
        {
            int w = bm.getWidth(), h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            for (int x = 0; x < w; x++)
            {
                for (int y = 0; y < h; y++)
                {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }

        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return image;
    }

    /**
     * 生成二维码bufferedImage图片
     *
     * @param content
     *            编码内容
     * @param barcodeFormat
     *            编码类型
     * @param width
     *            图片宽度
     * @param height
     *            图片高度
     * @param hints
     *            设置参数
     * @return
     */
    public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints)
    {
        MultiFormatWriter multiFormatWriter = null;
        BitMatrix bm = null;
        BufferedImage image = null;
        try
        {
            multiFormatWriter = new MultiFormatWriter();
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
            int w = bm.getWidth();
            int h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < w; x++)
            {
                for (int y = 0; y < h; y++)
                {
                    image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
                }
            }
        }
        catch (WriterException e)
        {
            e.printStackTrace();
        }
        return image;
    }

    /**
     * 设置二维码的格式参数
     *
     * @return
     */
    public Map<EncodeHintType, Object> getDecodeHintType()
    {
        // 用于设置QR二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
        // 设置QR二维码的纠错级别（H为最高级别）具体级别信息
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置编码方式
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 0);
        hints.put(EncodeHintType.MAX_SIZE, 350);
        hints.put(EncodeHintType.MIN_SIZE, 100);

        return hints;
    }
}

class LogoConfig
{
    // logo默认边框颜色
    public static final Color DEFAULT_BORDERCOLOR = Color.WHITE;
    // logo默认边框宽度
    public static final int DEFAULT_BORDER = 2;
    // logo大小默认为照片的1/5
    public static final int DEFAULT_LOGOPART = 5;

    private final int border = DEFAULT_BORDER;
    private final Color borderColor;
    private final int logoPart;

    /**
     * Creates a default config with on color {@link #} and off color
     * {@link #}, generating normal black-on-white barcodes.
     */
    public LogoConfig()
    {
        this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
    }

    public LogoConfig(Color borderColor, int logoPart)
    {
        this.borderColor = borderColor;
        this.logoPart = logoPart;
    }

    public Color getBorderColor()
    {
        return borderColor;
    }

    public int getBorder()
    {
        return border;
    }

    public int getLogoPart()
    {
        return logoPart;
    }
}
